Device for on-the-water measurement of rowing output

All those who compete in the sport of rowing have used the land rowing machine, Ergometer (commonly called the ‘erg’), manufactured by Concept II (Morrisville, Vermont, USA). Ergon is the Greek word for work, hence the Ergometer measures work. Rowers are commonly ranked according to their ‘erg score.’ The fault in this ranking is that the land Ergometer cannot account for many of the important technical aspects associated with rowing on the water. The goals of this project were to (1) develop a system for on-the-water measurement of work during rowing and then (2) demonstrate the potential of such a system to quantify performance and improve rowing technique. To achieve these goals, force was measured using strain gauges glued to the shaft of the rowing oar and angular displacement was measured using a potentiometer. The force and displacement measurements were sent to a microcontroller, which calculated the total work done in a particular stroke, as well as other parameters, and displayed the values to the rower. The parameters were used to evaluate the performance of three collegiate rowers on the water. The data were also used to plot force profiles, which were reviewed with each rower and the coach to illustrate the rowers’ habits and facilitate improving technique. One rower was ‘tutored’ with the device through five on-the-water practices, after which his force profiles and parameter values demonstrated significant improvement. The device not only provided a standard to which all rowers were compared on the water, but also supplied the rowers with important information on technical aspects of their strokes and pacing themselves.     

我院学生日常活动及膳食调查

为促进高校学生身心健康成长,随机抽取122名学生,对其进行日常活动及膳食情况的调查,结果显示,能量的消耗与摄入处于不平衡状态.对此提出了相应的对策与建议.     

体操运动员的心理应激与控制

应激是一种对运动员有害的心理反应。探讨体操运动员应激的成因及危害，并且提出一些有针对性的控制方法。     

论学校武术在素质教育中的作用与发展对策

以素质教育为立足点，论述武术在中小学实施素质教育中的地位、作用与存在的问题，并提出发展对策。     

试论篮球运动的节奏

现代篮球运动寓竞技化、智谋化、技艺化于一体,节奏正是这一趋势的最好体现.能否正确而深刻理解篮球运动的节奏并且运用节奏变化来争取比赛的主动权,是一个球队实力的反映,也是一个球队是否成熟的标志.运用文献资料、录像观察、逻辑分析等方法,对篮球运动节奏的表现形式、影响因素及节奏的运用等方面进行分析研究,为篮球运动训练中的节奏训练提供理论参考.     

Nakula’s extraordinary talent

An attempt is made here to provide a mathematical model which can explain an intriguing talent of Nakula. On the way, some simple and interesting properties of the real number system and related material are discussed.     

大学体育后进生的成因与对策研究

体育后进生是大学生中的一个特殊群体.研究这一特殊群体产生的原因,并从中探寻帮助他们摆脱后进的方法,以期为体育教学改革和素质教育提供参考依据.